User, business, and functional requirements for the enterprise search solution, along with any service level agreements (SLAs). This information will help you to design and build the search solution and verify whether the solution meets the requirements during testing.

Contact information for existing farm administrators, search administrators, site collection administrators, site owners, and any other stakeholders for the enterprise search solution. This information will help you to plan the enterprise search team, and it also provides a contact list for any communications that occur during planning, deployment, and operations.